internal NdrProcedureHandleParameter(NdrParamAttributes attributes,
NdrBaseTypeReference type, int offset, bool explicit_handle, NdrHandleParamFlags flags)
: base(attributes, 0, type, offset)
{
Flags = flags;
Explicit = explicit_handle;
}
internal NdrProcedureHandleParameter(NdrParamAttributes attributes,
NdrBaseTypeReference type, int offset, bool explicit_handle, NdrHandleParamFlags flags, bool generic)
: base(attributes, 0, type, offset, string.Empty)
{
Flags = flags;
Explicit = explicit_handle;
Generic = generic;
}
internal NdrProcedureDefinition(IMemoryReader mem_reader, NdrTypeCache type_cache,
ISymbolResolver symbol_resolver, MIDL_STUB_DESC stub_desc,
IntPtr proc_desc, IntPtr type_desc, NDR_EXPR_DESC expr_desc, IntPtr dispatch_func,
string name, NdrParserFlags parser_flags)
{
BinaryReader reader = mem_reader.GetReader(proc_desc);
NdrFormatCharacter handle_type = (NdrFormatCharacter)reader.ReadByte();
NdrInterpreterFlags old_oi_flags = (NdrInterpreterFlags)reader.ReadByte();
if ((old_oi_flags & NdrInterpreterFlags.HasRpcFlags) == NdrInterpreterFlags.HasRpcFlags)
{
RpcFlags = reader.ReadUInt32();
}
ProcNum = reader.ReadUInt16();
if (string.IsNullOrWhiteSpace(name))
{
if (symbol_resolver != null && dispatch_func != IntPtr.Zero)
{
Name = symbol_resolver.GetSymbolForAddress(dispatch_func, false, true);
}
Name = Name ?? $"Proc{ProcNum}";
}
else
{
Name = name;
}
StackSize = reader.ReadUInt16();
if (handle_type == 0)
{
// read out handle type.
handle_type = (NdrFormatCharacter)reader.ReadByte();
NdrHandleParamFlags flags = (NdrHandleParamFlags)reader.ReadByte();
ushort handle_offset = reader.ReadUInt16();
NdrBaseTypeReference base_type = new NdrSimpleTypeReference(handle_type);
if (handle_type == NdrFormatCharacter.FC_BIND_PRIMITIVE)
{
flags = flags != 0 ? NdrHandleParamFlags.HANDLE_PARAM_IS_VIA_PTR : 0;
}
else if (handle_type == NdrFormatCharacter.FC_BIND_GENERIC)
{
// Remove the size field, we might do something with this later.
flags = (NdrHandleParamFlags)((byte)flags & 0xF0);
// Read out the remaining data.
reader.ReadByte();
reader.ReadByte();
}
else if (handle_type == NdrFormatCharacter.FC_BIND_CONTEXT)
{
// Read out the remaining data.
reader.ReadByte();
reader.ReadByte();
}
else
{
throw new ArgumentException($"Unsupported explicit handle type {handle_type}");
}
Handle = new NdrProcedureHandleParameter(0,
(flags & NdrHandleParamFlags.HANDLE_PARAM_IS_VIA_PTR) != 0 ? new NdrPointerTypeReference(base_type)
: base_type, handle_offset, true, flags, handle_type == NdrFormatCharacter.FC_BIND_GENERIC);
}
else
{
Handle = new NdrProcedureHandleParameter(0, new NdrSimpleTypeReference(handle_type), 0, false, 0, false);
}
ushort constant_client_buffer_size = reader.ReadUInt16();
ushort constant_server_buffer_size = reader.ReadUInt16();
InterpreterFlags = (NdrInterpreterOptFlags)reader.ReadByte();
int number_of_params = reader.ReadByte();
NdrProcHeaderExts exts = new NdrProcHeaderExts();
if ((InterpreterFlags & NdrInterpreterOptFlags.HasExtensions) == NdrInterpreterOptFlags.HasExtensions)
{
int ext_size = reader.ReadByte();
reader.BaseStream.Position -= 1;
// Read out extension bytes.
byte[] extension = reader.ReadAll(ext_size);
if (System.Runtime.InteropServices.Marshal.SizeOf(typeof(NdrProcHeaderExts)) <= ext_size)
{
using (var buffer = new SafeStructureInOutBuffer <NdrProcHeaderExts>(ext_size, false))
{
buffer.WriteArray(0, extension, 0, ext_size);
exts = buffer.Result;
}
}
}
NdrParseContext context = new NdrParseContext(type_cache, symbol_resolver, stub_desc, type_desc, expr_desc, exts.Flags2, mem_reader, parser_flags);
List <NdrProcedureParameter> ps = new List <NdrProcedureParameter>();
bool has_return = InterpreterFlags.HasFlag(NdrInterpreterOptFlags.HasReturn);
int param_count = has_return ? number_of_params - 1 : number_of_params;
for (int param = 0; param < param_count; ++param)
{
ps.Add(new NdrProcedureParameter(context, reader, $"p{param}"));
}
if (Handle.Explicit && !Handle.Generic)
{
// Insert handle into parameter list at the best location.
int index = 0;
while (index < ps.Count)
{
if (ps[index].Offset > Handle.Offset)
{
ps.Insert(index, Handle);
break;
}
index++;
}
}
Params = ps.AsReadOnly();
if (has_return)
{
ReturnValue = new NdrProcedureParameter(context, reader, "retval");
}
DispatchFunction = dispatch_func;
}
